topic: Nutrient Pollution

topic: Nutrient Pollution

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Caribbean startups are turning excess seaweed into an agroecology solution
- Sargassum, a type of brown macroalgae, has been inundating beaches across the Caribbean since 2011. It comes from the Sargasso Sea in the Atlantic Ocean.
- The seaweed has harmed Caribbean economies and human health, making it a national emergency in some island-nations.
- Over the past decade, entrepreneurs and scientists have found ways to turn sargassum into nutrient-rich biofertilizers, biostimulants and other organic products to boost agricultural yields while cutting back on chemicals.
- But there are hurdles to scaling the industry, including sargassum’s inconsistent arrival, heavy metal content and fast decomposition rates.

Fertilizer management could reduce ammonia pollution from 3 staple crops: Study
- Nitrogen fertilizers are applied to crops to increase yield, but some of that nitrogen is lost to the atmosphere in the form of ammonia. Ammonia is a major air pollutant linked to numerous health issues, including asthma, lung cancer and cardiovascular disease.
- Using published agricultural and environmental data, researchers employed machine learning to quantify global ammonia emissions from rice, wheat and corn cultivation at 10-kilometer resolution. This added up to a global estimate of 4.3 billion kilograms (9.5 billion pounds) of ammonia emitted from the three staple crops in 2018.
- The model also revealed that optimizing fertilizer management to suit local conditions could achieve a 38% reduction in global ammonia emissions from the three crops. Optimal fertilizer management and the associated emissions reductions depended on local climate and soil characteristics.
- The model, which utilized machine learning, found that under current fertilizer management practices, climate change will increase ammonia emissions from rice, wheat and corn by up to 15.8% by 2100. But this increase could be entirely offset by optimizing fertilizer management and adapting it to local conditions.

Pollution poses big risks to global clean water supplies, study shows
- Nitrogen pollution could intensify global water scarcity threefold by 2050, scientists warn in a recently published paper. In addition, “newly emerging pollutants,” such as microplastics, heavy metals, pathogens and pharmaceuticals, emitted into waterways could cause “severe water degradation in the future.”
- Modeling the escalating impact of nitrogen pollution on water quality, the scientists found that more than 3,000 river basins globally are at risk of water scarcity by 2050 in one future scenario. That finding comes along with concern that climate change could exacerbate water quality decline and increased scarcity.
- Nitrogen pollution and water contamination by heavy metals and pathogens have serious known public health consequences, while health impacts from microplastics and pharmaceuticals need far more research.
- The researchers suggest solutions that include curbing nitrogen pollution through better fertilizer management practices and improved wastewater treatment.

Agricultural nitrogen pollution is global threat, but circular solutions await
- Nitrogen is an essential element for living organisms, needed to build DNA, proteins and chlorophyll. Although nitrogen makes up nearly 80% of the air we breathe, it’s availability to plants and animals is extremely limited. As a result, nitrogen has been a limiting factor in crop growth since the dawn of agriculture,
- Humanity shattered those limits with the Haber-Bosch process to make ammonia and synthetic fertilizers, driven by fossil fuels, and now used in vast amounts on crops. But that nitrogen influx has disrupted Earth’s natural nitrogen cycle. Today, nitrogen pollution is causing overshoot of several planetary boundaries.
- Nitrates pollute waterways, causing eutrophication. Nitrous oxide is a powerful greenhouse gas and an ozone-depleting substance. Ammonia is a cause of air pollution, with severe health impacts. Nitrogen is also used to produce potentially long-lived synthetic substances that themselves can become pollutants.
- Better agricultural management and technology could cut a third or more of nitrogen pollution. Circular economy solutions include better fertilizer efficiency, enhanced natural nitrogen fixation, and recovery and reuse of wasted nitrogen. Societal changes are also needed, including a shift in human diet away from meat.

U.S. mining companies leave lasting trail of contamination across Peru
- Mines operated by U.S. companies in Peru have for decades caused pollution that has affected local communities and ecosystems.
- In the Tacna and Moquegua regions, Southern Copper dumped 785 million metric tons of mining waste in Ite Bay, damaging a critical fishing area.
- In Arequipa, a surge in output at Freeport-McMoRan’s Cerro Verde copper mine has been accompanied by dozens of fines, mostly for dust in the air that has sickened nearby communities.
- Dust is also a persistent problem at The Mosaic Company’s Miski Mayo phosphate mine, where it’s been blamed for killing off livestock pasture and native carob trees.

Circular economy poised to go beyond outdated oil, gas and coal, experts say
- The exploitation of oil, gas and coal is now destabilizing all nine planetary boundaries and driving a triple crisis of climate change, biodiversity loss and pollution. The solution, experts say, is to move from a hydrocarbon-based linear economy to a diversified circular economy. This is Part 3 of a three-part miniseries.
- To step back from dangerous environmental thresholds, humanity needs to cut its use of fossil fuels, petroleum-based synthetic fertilizers and petrochemicals (especially plastics), with many analysts unequivocal about the unlikelihood of utilizing oil, gas and coal resources to implement a global circular economy.
- To achieve a circular economy, fossil fuels need to be phased out and alternative energy sources put in place. Bio-fertilizers need to be adopted and scaled up, and nitrogen fertilizers must be managed better to prevent overuse. Plastic production needs to be curbed, with a ban of single-use plastics as a start.
- Unfortunately, the world isn’t on target to achieve any of these goals soon, with surging oil and natural gas production by the U.S., Saudi Arabia and Russia expected to push the planet past the maximum 2° C (3.6° F) temperature increase agreed to in the 2015 Paris Accord — putting Earth at risk of climate catastrophe.

Beyond Climate: Fossil fuels rapidly eroding Earth’s ‘safe operating space’
- This exclusive three-part Mongabay mini-series explores how the oil, natural gas and coal industry are destabilizing nine vital Earth systems, which create a “safe operating space” for humanity and other life on the planet.
- The first story in the series examined some of the direct detrimental impacts of fossil fuels, petroleum-based agrochemicals and petrochemicals (such as plastics) on climate change, biodiversity loss, nitrogen pollution of the world’s oceans and other forms of pollution.
- This story looks at the direct and indirect impacts that hydrocarbon production is having as it destabilizes Earth’s freshwater systems; influences rapid land use change; pollutes air, land and water; potentially contributes to ozone layer decay; and ultimately impacts life on Earth.
- Scientists say humanity’s actions — inclusive of burning fossil fuels and producing petrochemical and agrochemical products — has already pushed Earth into the danger zone, overshooting six of nine critical planetary boundaries. Unless we pull back from these violated thresholds, life as we know it is at risk.

Beyond climate: Oil, gas and coal are destabilizing all 9 planetary boundaries
- It’s well known that the fossil fuel industry made the industrial age possible and raised much of humanity’s living standard, while also causing the current climate crisis. Less known is how oil, gas and coal are destabilizing other vital Earth operating systems — impacting every biome. This is Part 1 of a three-part exclusive Mongabay miniseries.
- Scientists warned this year that, of the nine identified planetary boundaries, humanity has now overshot safe levels for six — climate change, biosphere integrity, land system change, novel entities (pollution), biogeochemical flows of nitrogen and freshwater change.
- Fossil fuels, petroleum-based agrochemicals and petrochemicals (including plastics) are now significantly contributing to the destabilization of all nine planetary boundaries, based on the review of numerous scientific studies and on the views expressed by dozens of researchers interviewed by Mongabay for this article.
- According to multiple experts, if humanity doesn’t find alternative energy sources and phase out fossil fuels, agrochemicals and petrochemicals, then their production will continue driving the climate crisis; polluting the atmosphere, water and land; creating deoxygenated kill zones in the world’s oceans; and poisoning wildlife and people.

Oil firm Perenco eyes new blocks in DRC amid criticism of its track record
- Oil multinational Perenco has bid on two new oil blocks being auctioned off by the government of the Democratic Republic of Congo.
- Perenco operates the country’s only oil production facilities, at Muanda, near the mouth of the Congo River.
- Local and international critics accuse the oil company of polluting the environment, affecting fishing and farming, as well as residents’ health; the company denies this.

Red floods near giant Indonesia nickel mine blight farms and fishing grounds
- Farming communities in the shadow of Sulawesi’s giant Pomalaa nickel mining area say their fields have been flooded with red water, possibly laterite waste from the mining operations.
- Local farmers blame flooding from the mine for longer harvest cycles and reduced productivity.
- Indonesia’s biggest environmental NGO says the government should review mining permits to safeguard rice fields.

Award-winning community group in Sumatra cleans up lake
- A group of locals have since 2013 tried to clean up the trash pooling in Lake Sipin in the Sumatran province of Jambi.
- Their efforts have received national attention, with their leader, Leni Haini, awarded the country’s highest environmental award in 2022 by the government.
- Indonesia has announced a plan to restore 15 lakes (Sipin isn’t included) across the country by 2024, citing their high degree of degradation, chiefly sedimentation, which has resulted in their rapid shrinking and a decline in the biodiversity they host.
- These lakes are crucial in supporting the livelihoods of millions of Indonesians, serving as a source of freshwater, a form of flood control, and a site for fish-farming and tourism.

Sargassum surges in Mexico: From nuisance to new green industry?
- Since 2011, sargassum has worsened as a nuisance — possibly due to an influx of synthetic fertilizers into the Atlantic Ocean — with the brown algae washing up on Caribbean beaches where it rots, stinks like rotten eggs and devastates tourism, including in Mexico where 30 million go for beach holidays annually.
- Sea currents have made the beaches of the Mexican state of Quintana Roo a leading arrival point for the annual surge. So early on, scientists, members of civil society, politicians and businesspeople worked together to find solutions and turn the huge waste problem into an opportunity for new green businesses.
- Once cleaned of heavy metals, microplastics, sand and other detritus, sargassum is finding many uses, particularly as biogas, but also biofertilizer, cellulose packaging and even artificial vegan leather. But a national law regulating sargassum remains elusive, with the issue tangled up in Mexican bureaucracy.
- Debate is ongoing as to who should pay for disposal, for expensive recollection and transport of the algae. As entrepreneurs experiment, Mexico has become a regional leader in creating a sargassum industry, with other Caribbean nations seeking to learn from Mexico’s business mistakes and copying its successes.

Crud-to-crude: The global potential of biofuels made from human waste
- Creating liquid biofuels from human waste shows promise as a way to meet one of alternative energy’s greatest challenges: reducing the transportation sector’s heavy carbon footprint. The good news is there is a steady supply stream where waste is treated.
- Humanity produces millions of tons of sewage sludge annually via wastewater treatment. Existing disposal methods include landfilling, application on agricultural land, and incineration; each with social and environmental consequences.
- Harnessing the carbon-rich potential of sludge as a transportation fuel for planes, ships and trucks is part of a drive toward zero waste and creating a circular economy, say experts. A host of projects are underway to prove the effectiveness of various methods of turning all this crud into biocrude.
- Some techniques show promise in lab and pilot tests, but large-scale industrial plants have yet to be built. Using pollutant-laden sewage sludge as a biofuel comes with its own environmental concerns, but lacking a silver-bullet solution to the human waste problem, it could be part of a suite of best alternatives.

‘Brought down by gold’: Communities and nature suffer amid Nigerian bonanza
- Commercial-scale gold miners are wreaking havoc in southwestern Nigeria’s Atorin-Ijesha region.
- Local officials largely condone these often illegal activities, while the federal authorities have been slow to crack down.
- Affected community members say the miners are destroying their crops, polluting their land, and contaminating their water sources with mercury and lead.
- The gold rush is profiting a small handful of local elites and their Chinese partners, at the expense of local communities and the environment.

Pollution and climate change set stage for rise in antimicrobial resistance
- A new report from the United Nations Environment Programme illustrates the role that pollution, climate change and biodiversity loss can play in the development of antimicrobial resistance.
- The compounds used to treat bacterial, viral, parasitic and fungal infections have saved countless lives, but their overuse and their presence in the environment from human waste, agriculture and effluent from the pharmaceutical industry and places like hospitals has given rise to resistance to these chemicals in potentially harmful microbes.
- If this resistance continues to increase, experts warn that an additional 10 million people may lose their lives by 2050 — about the same number who died of cancer in 2020.
- The report’s authors recommend stronger safeguards around industrial runoff, better sanitation and more judicious use of antimicrobials to address this potential crisis.

Element Africa: Lead poisoning, polluted rivers, and ‘calamitous’ mining regulation
- More than 100,000 Zambian women and children are filing a class action lawsuit against mining giant Anglo American for decades of lead poisoning at a mine they say it controlled.
- Illegal gold mining in Ghana is polluting rivers that local communities depend on for water for drinking, bathing and farming.
- A legal case against a village head who allegedly sold off the community’s mining license to a Chinese company has highlighted what analysts call the “confusing” state of mining regulation in Nigeria.
- Element Africa is Mongabay’s bi-weekly bulletin rounding up brief stories from the extractives industry across Africa.

Degraded soil threatens to exacerbate Bangladesh food crisis
- Excessive use of chemical fertilizers is causing soil health degradation in Bangladesh, putting the country’s food security at risk.
- The degradation of soil health has been attributed to higher crop removal due to increasing crop intensity, use of modern crops (high-yielding varieties and hybrids), soil erosion, soil salinity, soil acidity, deforestation, nutrient leaching and minimum manure application, according to numerous studies.
- Chemical fertilizers are mostly imported, and as a result of global price volatility, food prices have shot up in Bangladesh.
- Some farmers are now switching to organic fertilizers to improve the soil health of their agricultural land.

Tobacco: Vaping and smoking drive environmental harm from farm to fingertip
- Electronic cigarettes heavily marketed via single-use flavored products are increasingly popular. These products require disposal of large amounts of hazardous waste, including huge quantities of lithium, a resource in demand for electric car batteries and rechargeable electronics for laptops and mobile phones.
- Even as vaping use grows, an estimated 6 trillion “traditional” cigarettes are still smoked annually; 4.5 trillion are thought to be discarded into the environment each year. Researchers and activists emphasize that the tobacco industry is responsible for considerable harm to nature and human health.
- Traveling along the supply chain, tobacco production and consumption has consequences for forests, oceans, the climate, and for farmers and their families who produce the crop — all to an extent not yet fully known or understood.
- Efforts are underway to rein in some of these negative impacts against the backdrop of an industry accused of consistently greenwashing to conceal an environmental footprint that is harming both nature and public health.

‘Bizarre’ newly classified scorpionfly shines light on Nepal’s insect diversity
- After closely examining long-held specimens of insects from Nepal, University of Göttingen zoologist Rainer Willmann has newly described and classified a previously unknown genus of scorpionfly he named Lulilan.
- These scorpionflies have an extremely long abdomen and tail and large genital structure that the male uses to grasp the female during copulation.
- Researchers say the presence of scorpionflies, which are threatened by development, insecticides and disease, indicate a healthy environment — and could be a positive sign for the diversity of Nepal’s insect life.

Java communities rally as clock ticks on cleanup of ‘world’s dirtiest river’
- A national program to transform Java’s Citarum River into a source of drinking water expires in 2025.
- A reforestation program in uplands near the source of the river is drawing on community volunteers.
- West Java Governor Ridwan Kamil tells Mongabay that residents will see improved water quality by 2025 and that there is political will to tackle the crisis.

In restoring polluted rivers, Indonesia looks at restocking endemic fish
- Two reported mudflows overflowed the Serayu River on the Indonesian island of Java within the space of a week earlier this year, mucking its waters and killing off fish.
- The incidents have raised calls from conservationists and fishers for restoration and fish restocking efforts in the river.
- Fish restocking has been carried out for several decades in Indonesian rivers, mainly as an effort to increase fisheries productivity and fish populations in inland waters such as rivers, reservoirs and lakes.
- But experts say these restocking efforts often emphasize ceremony at the expense of measures to ensure success, such as post-monitoring assessment.

Thai gold mine blamed for sickening local villagers is set to reopen
- The Chatree mining complex, owned by a subsidiary of Australia’s Kingsgate Consolidated Ltd., began operations in 2001 and was closed by Thailand’s ruling junta in 2017.
- Villagers say the environment and their health has suffered as a result of the operations; mass blood tests found that the majority of children and adults tested exhibited elevated levels of heavy metals, including arsenic, manganese and cyanide.
- The mining company denies allegations that its operations have caused health problems, and in 2017 sued the Thai government for shutting down the mine, seeking “very substantial damages.”
- In January 2022, the government gave permission for the mine to reopen.

Troubled waters: A massive salmon farm off the coast of Maine is stalled
- Norwegian-backed American Aquafarms was slated to build the largest salmon farm in North America along the coast of the U.S. state of Maine, using a closed-pen system said to minimize waste.
- But opponents say the closed-pen technology is untested at such a large scale, and warn that environmental impacts will devastate the pristine waters.
- The proposed salmon farm would have been right at the shorelines of Acadia National Park, threatening the region’s untarnished views and noise pollution.
- Currently, the project is indefinitely delayed as state officials terminated the lease application on April 19th. However, with Maine leasing the ocean for only $100 an acre ($250 a hectare) per year, opponents worry that future investors will see the coast as a lucrative target.

Oil spill contaminates wildlife, beaches and protected areas in Peru
- On Jan. 15, a refinery owned by Spanish oil company Repsol spilled nearly 12,000 barrels of oil into the sea off Lima, Peru, as it was pumping the oil from a tanker.
- Experts have questioned why the refinery of La Pampilla was operating that day, when there were unusually high waves caused by the Tonga volcano eruption and tsunami.
- Peru’s Environmental Evaluation and Enforcement Agency (OEFA) has fined Repsol for similar spills on at least three prior occasions, and this time the company could be hit with more than $37 million in fines.
- The spill has spread beyond the Lima coast and out toward islands that are part of a network of protected nature reserves, posing serious threats to marine life and to artisanal fishermen.

Innovative sewage solutions: Tackling the global human waste problem
- The scale of the world’s human waste problem is vast, impacting human health, coastal and terrestrial ecosystems, and even climate change. Solving the problem requires working with communities to develop solutions that suit them, providing access to adequate sanitation and adapting aging sewage systems to a rapidly changing world.
- Decentralized and nature-based solutions are considered key to cleaning up urban wastewater issues and reducing pressure on, or providing affordable and effective alternatives to, centralized sewage systems.
- Seeing sewage and wastewater — which both contain valuable nutrients and freshwater — as a resource rather than as pollutants, is vital to achieving a sustainable “circular economy.” Technology alone can only get us so far, say experts. If society is to fully embrace the suite of solutions required, a sweeping mindset change will be needed.

The thick of it: Delving into the neglected global impacts of human waste
- Though little talked about, our species has a monumental problem disposing of its human waste. A recent modeling study finds that wastewater adds around 6.2 million tons of nitrogen to coastal waters worldwide per year, contributing significantly to harmful algal blooms, eutrophication and ocean dead zones.
- The study mapped 135,000 watersheds planetwide and found that just 25 of them account for almost half the nitrogen pollution contributed by human waste. Those 25 were pinpointed in both the developing world and developed world, and include the vast Mississippi River watershed in the United States.
- Human waste — including pharmaceuticals and even microplastics contained in feces and urine — is a major public health hazard, causing disease outbreaks, and putting biodiversity at risk. Sewage is impacting estuary fish nurseries, coral reefs, and seagrasses, a habitat that stores CO2, acting as a buffer against climate change.
- Waste is often perceived as mostly a developing world problem, but the developed world is as responsible — largely due to antiquated municipal sewage systems that combine rainwater and wastewater in the same pipes. As a result, intense precipitation events regularly flush raw sewage into waterways in the U.S., U.K. and EU.

More trees means healthier bees, new study on air pollution shows
- Scientists analyzed levels of chemical pollutants in native jataí bees across eight landscapes in Brazil’s São Paulo state.
- They found that in landscapes with more vegetation, the bees had fewer pollutants, at lower levels, indicating that the plants act as a filter and protective barrier
- The findings add to the growing scientific evidence about the importance of afforestation in urban areas, including creating ecological corridors to connect separate landscapes.
- Air pollution is the world’s top driver of illness and death from chronic noncommunicable diseases.

Nitrogen: The environmental crisis you haven’t heard of yet
- The creation of synthetic fertilizers in the early 20th century was a turning point in human history, enabling an increase in crop yields and causing a population boom.
- But the overuse of nitrogen and phosphorus from those fertilizers is causing an environmental crisis, as algae blooms and oceanic “dead zones” grow in scale and frequency.
- Of the nine “planetary boundaries” that scientists say we must not cross in order to sustain human life, the boundary associated with nitrogen and phosphorus waste has been far surpassed, putting Earth’s operating system at risk.
- Global policymakers are beginning to slowly recognize the scale of the problem, as climate change threatens to make it worse. Absent major reforms to agribusiness practices, scientists are aiming to convince the world to reduce waste.

Vale told Brazil communities they were in danger. They say Vale wants their land
- Residents moved from their homes in Brazil’s Minas Gerais state over fears of impending collapses of dams operated by miner Vale are accusing the company of trying to take over their land.
- The first such evacuation was ordered in February 2019 in the municipality of Barão de Cocais, two weeks after the Brumadinho dam disaster killed 458 people.
- In the two and a half years since then, more communities have been moved, with affected residents saying Vale is stonewalling them on compensation.
- A document drawn up by state prosecutors in March confirms that there’s been interest in prospecting for minerals on the vacated land, although Vale has not responded to the accusation.

Building back Miami’s Biscayne Bay: Do natural solutions hold hope?
- A massive fish kill in August 2020 was a red flag that historically troubled Biscayne Bay in Miami had passed a biodiversity health tipping point.
- Years of scattered efforts and mixed results of various conservation actors working toward the bay’s recovery have begun to fade in favor of more collaborative, inclusive efforts.
- Scientists and citizens are now focusing their efforts on creative ways to restore biodiversity in Biscayne Bay.

Climate change isn’t fueling algal blooms the way we think, study shows
- A team of international researchers recently published the first global assessment of harmful algal blooms (HABs) — events in which toxic algae proliferate and cause harm to marine life and humans — based on nearly 10,000 recorded events between 1985 and 2018.
- The study found that there are no global trends that would suggest that climate change is having a uniform impact on HABs throughout the world, although this is a commonly held belief.
- The researchers were able to detect clearer regional trends that showed increases, decreases or no significant changes in HABs in certain parts of the world.
- It also found that there was a perceived increase in HABs amid the booming aquaculture industry, although the study does not necessarily suggest that aquaculture is causing an increase in HABs.

New Attenborough film sounds alarm on planetary boundaries, but offers hope
- A newly released Netflix documentary, “Breaking Boundaries: The Science of Our Planet,” features David Attenborough and Johan Rockström, one of the scientists who introduced the concept of planetary boundaries.
- Planetary boundaries are Earth system processes essential for the planet’s functioning but have an environmental limit to which they can tolerate changes.
- According to experts, if these limits are transgressed, the Earth can be pushed into a new, dangerous state.
- While the film suggests that the planet requires urgent repair, it also offers a clear path forward — and a message of hope.

The nine boundaries humanity must respect to keep the planet habitable
- All life on Earth, and human civilization, are sustained by vital biogeochemical systems, which are in delicate balance. However, our species — due largely to rapid population growth and explosive consumption — is destabilizing these Earth processes, endangering the stability of the “safe operating space for humanity.”
- Scientists note nine planetary boundaries beyond which we can’t push Earth Systems without putting our societies at risk: climate change, biodiversity loss, ocean acidification, ozone depletion, atmospheric aerosol pollution, freshwater use, biogeochemical flows of nitrogen and phosphorus, land-system change, and release of novel chemicals.
- Humanity is already existing outside the safe operating space for at least four of the nine boundaries: climate change, biodiversity, land-system change, and biogeochemical flows (nitrogen and phosphorus imbalance). The best way to prevent overshoot, researchers say, is to revamp our energy and food systems.
- In 2021, three meetings offer chances to avoid planetary boundary overshoot: the Convention on Biological Diversity meeting in Kunming, China; the U.N. Climate Summit (COP26) in Glasgow, U.K.; and the U.N. Food Systems Summit in Rome. Agreements with measurable, implementable, verifiable, timely and binding targets are vital, say advocates.

Hawaiian reefs lost almost half their fish to pollution and fishing
- A new study has found a 45% decline in the biomass of important fish species in West Hawai‘i’s reefs across a 10-year period.
- According to the research, sewage pollution was the biggest contributor to declining fish biomass; spearfishing, collection for the aquarium trade, and fishing using lay nets followed closely behind.
- The study will inform new management practices to protect Hawai‘i’s coral reefs, including the state’s 30 by 30 initiative, which aims to designate 30% of Hawai‘i’s nearshore waters as marine protected areas by 2030.

For European chemical giants, Brazil is an open market for toxic pesticides banned at home
- In 2018, Brazil used more than 60,000 tonnes of highly hazardous pesticides banned in the European Union.
- Three Europe-based multibillion-dollar companies control 54% of the world market.
- They include German agrochemical giants BASF and Bayer, as well as Swiss company Syngenta, one of whose pesticides still being sold in Brazil has been banned in its home country for more than 30 years.

Brazil’s native bees are vital for agriculture, but are being killed by it
- Native Brazilian bees provide several environmental services, the most important being pollination of plants, including agricultural crops.
- Stingless beekeeping also helps to keep the forest standing, as honey farmers tend to preserve the environment and restore areas used in their activity.
- But food production based on monoculture and heavy on pesticide use is threatening native bee populations.
- The western honey bee (Apis mellifera), an imported species, dominates Brazil’s beekeeping and its research into the harmful effects of pesticides; but studies show that pesticides affect stingless bees more intensely.

Tax exemptions on pesticides in Brazil add up to US$ 2.2 billion per year
- Aside from saving from generous discounts or total exemptions on taxes, multinational giants in the pesticides sector also receive millions in public resources to fund research through the BNDES [Brazil’s National Development Bank]
- The amount that the Brazilian government fails to collect because of tax exemptions on pesticides is nearly four times as much as the Ministry of the Environment’s total budget this year (US$ 600 million) and more than double what the nation’s national health system [SUS] spent to treat cancer patients in 2017 (US$ 1 billion).
- Tax exemptions related to pesticides are upheld by laws passed decades ago, which view these products as fundamental for the nation’s development and that, because of this, need stimulus—like what happens with the national cesta básica [basket of basics] food distribution program.
- The scenario that benefits pesticide companies could change, as the Federal Supreme Court [STF] is expected to soon judge a Direct Action of Unconstitutionality comparing pesticides to categories like cigarettes, harmful to health and which generate costs that are paid by the entire population—and for which reason are subject to extra taxes instead of tax breaks.

Companies leave communities to grapple with mining’s persistent legacy
- The destructive legacy of mining often lingers for communities and ecosystems long after the operating companies leave.
- Several large, multinational mining corporations have scrubbed their images — touting their commitments to sustainability, community development and action on climate change — but continue to deny accountability for the persistent impacts of mining that took place on their watch.
- A new report from the London Mining Network, an alliance of environmental and human rights organizations, contends that these companies should be held responsible for restoring ecosystems and the services that once supported communities.

Past and future tropical dams devastating to fish the world over: Study
- Most research on the ecological impacts of tropical dams does so one dam project at a time. But a new landmark study attempts to connect the dots globally by analyzing tropical dam impacts on freshwater river fish around the world.
- The research assembled data on the geographic range of 10,000 fish species, and checked those tropical species against the location of 40,000 existing dams and 3,700 dams that are either being built or planned for the near future.
- Scientists found that biodiversity hotspots including the Amazon, Congo, Salween and Mekong watersheds are likely to be hard hit, with river fragmentation potentially averaging between 25% and 40% due to hydropower expansion underway in the tropics.
- Dams harm fish ecology via river fragmentation, species migration prevention, reservoir and downstream deoxygenation, seasonal flow disruption, and blockage of nurturing sediments. Drastic sudden fish losses due to dams can also destroy the commercial and subsistence livelihoods of indigenous and traditional peoples.

Half a billion bees dead as Brazil approves hundreds more pesticides
- Exposure to pesticides containing neonicotinoids and fipronil caused the deaths of more than 500 million bees in four Brazilian states between December 2018 and February 2019, according to an investigation by Agência Pública and Repórter Brasil.
- Both classes of chemicals are banned in the European Union, but the Brazilian government under President Jair Bolsonaro is clearing the way for their widespread use.
- With 290 pesticide products approved for use since the start of the year, beekeepers are bracing for an increase in beneficial insect die-off.
- The real toll on bees from pesticide use is likely much larger, given that no one knows how many wild bees have been impacted by indiscriminate spraying, including in areas beyond plantation borders.

Madeira River dams may spell doom for Amazon’s marathon catfish: Studies
- Independent monitoring of a giant Amazon catfish population in the Madeira River, a major tributary of the Amazon, confirms that two hydroelectric dams have virtually blocked the species’ homing migration upstream — the longest known freshwater fish migration in the world.
- Research completed in 2018 indicates a serious decline in catches of the gilded catfish (Brachyplatystoma rousseauxii) and other key commercial species on the Madeira, both upstream and downstream of the two dams.
- New monitoring techniques show that the disruption of the migration route raises the risk of extinction for this species, for which researchers have recommended the conservation status be elevated from vulnerable to critically endangered.
- If the gilded catfish and other migratory species are to survive, mechanisms to assist their migration past the dams must be improved, researchers say.

Dam holding mining waste collapses in Brazil
- The collapse of a dam in the state of Minas Gerais in Brazil on Jan. 25 left at least 58 people dead and hundreds missing.
- The dam held the waste by-product of iron ore mining from a nearby mine run by a company called Vale.
- Vale was involved in another dam collapse in 2015 — called Brazil’s worst environmental disaster — that resulted in criminal charges for several of the company’s leaders and nearly $100 million in fines.
- Critics of mining practices say that the recent failure of the dam shows that authorities should step up the enforcement of regulations in Brazil.

Global marine wilderness has dwindled to 13 percent, new map reveals
- New research examining the effects of 19 human stressors on the marine environment shows that only 13 percent of oceans can still be considered wilderness.
- Of the remaining wilderness, much of which is located in the high seas and at the poles, less than 5 percent falls under protection, and climate change and advances in technology could threaten it.
- The authors of the study call for international cooperation to protect the ocean’s wilderness areas, including a “Paris Agreement for the Ocean,” which they hope will be signed in 2020.

In Bali fish die-offs, researchers spot a human hand
- Mass fish die-offs are not uncommon in the volcanic lakes that dot Indonesia, including Bali’s Lake Batur, which sits in the crater of an active volcano.
- While sulfur releases, steep temperature gradients and other natural phenomena are responsible for some of the bigger die-offs, researchers have identified the chemicals from excess fish feed as the main culprit for the more frequent die-offs caused by oxygen depletion.
- Similar die-offs in other lakes around Indonesia have also been traced back to household and industrial waste, as well as agricultural runoff and fish farms. Researchers have warned that more than a dozen lakes could die out as soon as 2025 as a result of this chemical assault.

Small hydropower a big global issue overlooked by science and policy
- Brazil recently announced an end to its mega-dam construction policy, a strategy other nations may embrace as understanding of the massive environmental and social impacts of big dams grows.
- However, a trend long neglected by scientists and policymakers ¬ the rapid growth of small dams – has been spotlighted in a new study.
- Nearly 83,000 small dams in 150 nations (with 11 small dams for each large dam), exist globally, while that number could triple if all capacity worldwide is used. More than 10,000 new small dams are already in the planning stages. But small dam impacts have been little studied by scientists, and little regulated by governments.
- Environmentalists say that, with the rapid construction of new small dams, it is urgent for researchers to assess the impacts of different types of small dams, as well as looking at the cumulative impacts of many small dams placed on a single river, or on main stems and tributaries within watersheds.

Mesoamerican Reef gets improving bill of health
- The Healthy Reefs Initiative released its report card on the state of the Mesoamerican Reef. In the last decade, the grade has risen from poor to fair.
- The Mesoamerican Reef runs along about 1,000 kilometers of the coastlines of Mexico, Honduras, Belize and Guatemala.
- Fish populations have grown, as have the coral that make up the reef.
- But scientists were concerned to see an increase in macroalgae on the reef, which results from runoff and improperly treated sewage effluent.

Study: Amazon dams are disrupting ecologically vital flood pulses
- Flood pulses are critical to the way the Amazon, its tributaries and other tropical rivers function – and these seasonal flood pulses are a huge driver of ecological productivity and diversity.
- Floodplain forests depend upon annual flood pulses to bring nutrients and sediment from river channels out into the surrounding terrestrial habitat.
- Reductions to flood pulses, brought by Amazon dams both large and small, could lead to shifts in tree species diversity and composition, with implications for carbon storage and emissions.
- Unreliable flood regimes, as created by dams of all sizes, significantly impact Amazon river systems and species’ life cycles, population dynamics, food sources, and habitats above and below the water line.

Global warming, pollution supersize the oceans’ oxygen-depleted dead zones
- Large areas of the world’s oceans are rapidly losing oxygen as a result of global warming and pollution, threatening marine ecosystems and the hundreds of millions of people who depend on them, according to a new study.
- The scientists expect deoxygenation to increase well beyond these so-called dead zones as long as human-driven global warming continues.
- Despite the grim outlook for the oceans, the researchers suggest that cutting fossil fuel use and protecting vulnerable marine life could tackle the problem.

Andes dams could threaten food security for millions in Amazon basin
- More than 275 hydroelectric projects are planned for the Amazon basin, the majority of which could be constructed in the Andes whose rivers supply over 90 percent of the basin’s sediments and over half its nutrients.
- A new study projects huge environmental costs for six of these dams, which together will retain 900 million tons of river sediment annually, reducing supplies of phosphorus and nitrogen, and threatening fish populations and soil quality downstream.
- Accumulating sediments upstream of dams are projected to release 10 million tons of carbon into the atmosphere each year, significantly contributing to global warming, and would contaminate waters and the aquatic life they support with mercury.
- The construction of these dams should be reconsidered to preserve food security and the livelihoods of millions of people in the Amazon Basin.

NOAA announces largest-ever Gulf of Mexico ‘dead zone’
- The dead zone is primarily the result of nutrient pollution that stimulates massive blooms of algae. This algae is fed by nutrient runoff from agricultural areas in the U.S. Midwest carried down by the Mississippi River.
- An investigation found meat production largely to blame for this nutrient runoff.
- However, representatives with the meat industry say the report failed to consider the impact of ethanol production.
- NOAA scientists say the dead zone is likely to continue growing if nutrient levels aren’t reduced.

Study: Brazilian mega-dams caused far more flooding than EIA predicted
- A satellite study of the Santo Antônio and Jirau dams in the Amazon found the area flooded by their reservoirs to be much greater than projected by the Environmental Impact Assessment (EIA) done as part of the Brazilian dams’ licensing process.
- Satellite images from 2006-2015 were analyzed, spanning the time immediately before, during, and after dam construction, and then these images were compared with the flooding predictions found in the EIA.
- The total flooded area upstream of the dams was found to be 69.8 percent larger than projected by the EIA. The area of natural forest flooded exceeded EIA predictions by 52 percent.
- Political considerations likely influenced the EIAs gross inaccuracy, with real world results. In 2014, Madeira River floods upriver from the dams impacted 75,000 people, killed a quarter-million livestock and caused over US $180 million in damage.

International action a must to stop irreversible harm of Amazon dams, say experts
- A study, published in Nature and led by Edgardo Latrubesse of the University of Texas at Austin, went beyond local impacts of individual dams to assess cumulative, basin-wide impacts that planned dams are bringing to 19 major Amazon sub-basins.
- The team developed a new metric: the Dam Environmental Vulnerability Index (DEVI) which includes assessments of basin integrity (vulnerability to land use change and erosion, etc.); fluvial dynamics (influence of sediment fluxes and flood pulses); and the extent of the river affected by dams.
- A score for each sub-basin from 0-100 was assigned, with higher values indicating greater vulnerability. The Madeira, Ucayali, Marañon and Tapajós sub-basins were found to be most threatened; all had DEVI totals higher than 60.
- The researchers say that a collective, cooperative, multi-country Amazon region assessment of dams and their cumulative impacts is urgently needed to get a handle on the true magnitude of the threat to the Amazon, as well as means to a solution.

New lichen database takes big picture approach to forest monitoring
- Studying lichens is one way that scientists track air pollution in forests.
- A new database from the U.S. Forest Service will gather existing lichen information into a powerful centralized tool that is freely available.
- Scientists will be able to use the database to study lichen biodiversity, air quality, pollution, and forest health.

Nitrogen pollution slows down forest decomposers
- Soil fungi are the primary decomposers in temperate forests.
- Scientists found that fungi species reared in nitrogen polluted soils were able to decompose far less plant material than the same species collected from less polluted soil.
- Even when fungi from polluted areas were grown in un-polluted petri dishes, they still could not decompose as well as fungi collected from cleaner soils.
- Researchers hypothesize that nitrogen pollution could be altering how fungi metabolize nitrogen.

Rio Olympic organizers fail to meet all environmental goals
- Rio de Janeiro, host of the 2016 Olympic Games, is plagued by waterways polluted with garbage, raw sewage and untreated hospital waste.
- In 2009, as part of its Olympics Legacy commitment, Brazil’s government dedicated itself to cleaning up Rio’s rivers and estuary in time for the Games. That initiative — conducted by federal, state and city government, as well as private companies, has been a near total failure.
- As a result, participants in Olympic sailing and swimming events may be exposed to dangerous levels of unhealthy viruses and bacteria.
- Of particular concern: scientists have found superbugs — antibiotic resistant bacteria — in the waters at several locations where aquatic events are being held.

Too much of a good thing: fertilizer ‘one of the three major drivers of biodiversity loss this century’

Excess nutrients impacting productivity, biodiversity, functioning of grasslands around the world The world’s grasslands are being destabilized by fertilization, according to a paper recently published in the journal Nature. In a study of 41 grassland communities on five continents, researchers found that the presence of fertilizer weakened grassland species diversity. The researchers surveyed grasslands in […]
Measuring nutrient pollution in pristine waters: Puerto Rico’s Vieques Island

Vieques Island. Photo by: USFWS. Life in the ocean require nutrient, but too much of a good thing can be hugely detrimental. Nutrient pollution from agricultural and industrial runoff causes serious ecological harm in the world’s marine waters, at times producing massive “dead zones” where much of the dissolved oxygen has been stripped making it […]

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